MICROANATOMY

Detailed explanation-1: -Each skeletal muscle consists of thousands of muscle fibers wrapped together by connective tissue sheaths. The individual bundles of muscle fibers in a skeletal muscle are known as fasciculi. The outermost connective tissue sheath surrounding the entire muscle is known as epimysium.

Detailed explanation-2: -Each fascicle (or fasciculus) is a bundle of muscle fibers, also called myocytes, bound together via the endomysium tissue that provides pathways for the passage of blood vessels and nerves.

Detailed explanation-3: -Beneath the fascia in skeletal muscle is another layer of connective tissue termed the epimysium which is closely associated with the fascia. It extends inwards and becomes the perimysium, then into the muscle separating muscle fibers into small bundles termed fascicles.

Detailed explanation-4: -Function. In the heart specialized cardiac muscle cells transmit electrical impulses from the atrioventricular node (AV node) to the Purkinje fibers – fascicles, also referred to as bundle branches.

Detailed explanation-5: -Perimysium is a continuous layer of collagenous connective tissue that separates the skeletal muscle tissue into muscle fascicles (i.e., bundles of muscle cells).